Planets Net planet nine kicked out by the moody young solar system Planets Net

Planets Net planet nine kicked out by the moody young solar system Planets Net

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A little interesting about space life.

So here you have two definitions of a blue moon but the one for a calendar blue moon does not describe the true meaning of a blue moon. Here's why:



and here is another

Dr. Porco further believes that Enceladus's orbit could have been much more eccentric in the past. The greater the eccentricity, the greater the tidal squeezing, and the resulting structural variations produce heat. In this case, the heat would have been saved inside the icy moon, melting some of the ice to replenish the liquid water sea. Dr. Porco continued to explain that "(T)he tidal flexing occurring now is not enough to account for all the heat presently coming out of Enceladus. One way out of this dilemma is to assume that some of the heat observed today was generated and stored internally in the past... (N)ow that the orbit's eccentricity has lessened, the heat emanating from the interior is a combination of heat produced today and in the past."



and finally

Europa: Planetary scientists generally think that a layer of liquid water swirls around beneath Europa's surface, and that heat from tidal flexing causes the subsurface ocean to remain liquid. It is estimated that the outer crust of solid ice is about 6 to 19 miles thick, including a ductile "warm ice" layer that hints that the liquid ocean underneath may be 60 miles deep. This means that Europa's oceans would amount to slightly more than two times the volume of Earth's oceans.

More information:

Titan has a radius that is about 50% wider than Earth's Moon. It is approximately 759,000 miles from its parent-planet Saturn, which itself is about 886 million miles from our Sun--or 9.5 astronomical units (AU). One AU is equal to the average distance between Earth and Sun, which is 93,000,000 miles. The light that streams out from our Star takes about 80 minutes to reach Saturn. Because of this vast distance, sunlight is 100 times more faint at Saturn and Titan than on Earth.



From these observations planetary scientists were able to determine that almost 98% of the gas in the plume is water, about 1% is hydrogen, and the rest is a combination of other molecules that include methane, ammonia, and carbon dioxide.



First launched as GRAIL A and GRAIL B in September 2011, the two probes, playfully dubbed Ebb and Flow, operated in an almost-circular orbit near the lunar poles at an altitude of about 34 miles until their mission concluded in December 2012. The distance between the twin probes altered slightly as they flew over areas of lesser or greater gravity that resulted from visible features--such as craters and mountains--as well as by hidden masses secreted beneath our Moon's surface.